220 Ch 220. Zika Virus and Chikungunya Virus

Zika: 2015-2016 Americas epidemic + congenital Zika syndrome (microcephaly + brain defects); GBS post-Zika association; sexual transmission; Chikungunya: severe + prolonged polyarthralgia; Ixchiq (live attenuated chikungunya vaccine, FDA 2023) = breakthrough。